This weapon was first named on the "Holiday Special Boba Fett Character Key" from Acme Archives. It also previously appeared on the Boba Fett (Animated Debut) action figure. However, the action figure incorrectly has the weapon as a two-pronged staff. The cartoon and character key properly shows the weapon with a rifle stock and trigger on the back of the blaster.
It is similar to Chop'aa Notimo's electrostaff.